Process of making mosaics of glass



(No Model.)

H. F. BELGHER.

PROCESS OPMAKING MOSAIGS OF GLASS.

No. 396,911. Patented Jan. 29, 1889.v

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HENRY F. BELCHER, OF IRVINGTON, NEIV JERSEY.

PROCESS OF MAKENG MOS/M68 OF GLASS.

SPECIFICATION forming part of Letters Patent No. 396,911, dated January29, 1889.

Application filed May 11, 1887. Serial No. 237,790. (No model.)

To all whom it may concern.-

Be it known that I, HENRY FOSTER BEL CHER, a citizen of the UnitedStates, residing at Irvington, in the county of Essex and State of NewJersey, have invented certain new and useful Improvements in the Processof hlaking Mosaics of Glass; and I do hereby declare the following to bea full, clear, and exact descrip' tion of the invention, such as willenable others skilled in the art to which. it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification.

This invention relates to certain improvements in the manufacture ofmosaics of glass,

either such as are described and claimed in prior patents granted to meAugust 12, 1884, and numbered 303,359, and May 5,1885,num bered 317,077,or such as are produced by any of the ordinary methods of lead-glazing,the object being to secure greater strength, whereby the light or mosaicis better adapted to resist the force of wind or the effect of a blow,to receive a more perfect finish, and to receive a more perfectimpermeability by closing all the minute perforations or blowholes inthe frame of the said mosaic.

The invention consists in the improved process of manufacture of mosaicof glass or other plates or pieces, substantially as will be hereinafterset forth,and finally be embodied in the claim.

Referring to theaccompanying drawings, in which like letters ofreference indicate corresponding parts in each of the several figures.Figure 1 is a plan of a mosaic or light of glass. Fig. 2 is a sectionalview of a portion of the same, and Fig. 3 is a plan showing more clearlycertain peculiarities of the frame.

In said drawings, A indicates a series of plates, preferably of glass,though for some purposes they may be of other material, and 1) indicatesa metallic frame for holding said pieces together.- This is preferably acast frame-work, such as is described in the prior patents abovereferred to. After the mosaic is formed by securing the plates in theframework, and the latter is cleaned so as to present a suitable surfaceto the electrolytic fluid, the frame with the plates placed in /a bathand connected with a galvanic battery or dynamo, and a heavy deposit, 0,of copper is imposed on the frame, of sufficient thickness to fillimperfections in the frame. This deposit is caused to overlie thesurface edges of the glass by covering the surface edges with a film ofplumbago or other conducting material, and form a flange, 0, by means ofwhich the glass or other pieces held by the frame are more securelyfastened therein.

When made in this manner, the mosaics are much lighter, more economical,and much more pleasing to the eye.

To obtain an ornamental effect in the frame, particularly apparent onthe outside, or the light side, of the window, I prefer to deposit thecoating of metal in two colors by making two deposits on the frame, one,6, in one kind of color of metal, such as copper, and the other, f, in acontrasting color, such as silver, or by depositing the metal on aportion of the frame, only leaving the other portions of the body metalof the frame uncovered to give the contrast. To this end I prefer tostop off certain parts of the frame or cover the same with a film ofconducting mattersuch as is commonly employed for stopping off ineleotroplatingand then plating the remaining parts so that an ornamentalfigure will be produced in the frame-work, contrasting with the unplatedportions of said framework. The unplated portions may subsequently beplated with a deposit contrasting in color with the first deposit.

Having thus described the invention, what I claim new is The process ofmanufacturing mosaics herein described, to wit: arranging glass ormineral plates in a separated relation to one another, casting a metalframe in the interstices between said plates or pieces, covering thesurface edges of said plates with a thin coating of plumbago or otherconducting material, and then eleetro-depositing a film of metal uponsaid covered edges and the metal frame, so as to form an overlappingflange to hold said plates or pieces in position, as and for thepurposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this4th day of May, A. D. 1887.

' HENRY F. BELGI IER.

\Vi tn esses CHARLES H. PELL, OoNsrmNcn ll. BALDWIN.

